Hi, i have been trying to build a dodecahedron light project. Unfortunately i am stumped. My angles seem to be off just enough that when i try to fit the third piece in, it just wont go. Anyone have any experience with this shape that can give me a little insight into what i shoukd be cutting my angles at? Right now i am workingon a miter saw.

Thanks!

11 replies so far

Been There – Done That!!!! These photos illustrates the solution I came up with. By the way, the angle of the cuts was 69.095 degrees. Send me a message if you would like additional information. I also did an icosahedron and a tetrahedron.

Happy to help out. These go together pretty fast and are a lot of fun to assemble. I have used super glue and Titebond III in the joints. The Titebond is a little more forgiving. The vertices were cut in lengths of several feet to the profile of an equilateral triangle or a regular pentagon. The slots are simply saw kerfs. After cutting the kerfs just cut the lengths you need for the vertices.

Um, this is an octahedron, it has 8 faces. A tetrahedron has 4 faces. /Geometry teacher. BTW, I like your method of configuring the vertices. I made a dodecahedron out of copper strips many years ago, and the jigs to hold the strips in position while soldering them was a challenge, to say the least.